【单选题】

Questions 16 to 20 are based on the following talk. A、They sell them at a very low price.

B、They charge half price.
C、They give them away for free
D、They trade them for local products.

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根据网考网移动考试中心的统计，该试题：
64%的考友选择了A选项
9%的考友选择了B选项
24%的考友选择了C选项
3%的考友选择了D选项